Assuming the guy is 6 ft, those bags look roughly to be 2m X 1m X 1m, using that and a bit of chatGPT to do the maths because I'm lazy, we're looking at roughly 2,500 large bags of Cheetos per clear bag

Which I'm guessing is only if the cheetos are packed perfectly at maximum density

But even if we half it and for every cheeto, there's an equivalent amount of volume as space, then we're still looking at a lot of bags, this is a bargain at approximately 5¢ per equivalent large bag

The maths it did in python apparently:

import math

# Dimensions of a Cheeto
length = 0.05  # in meters
diameter = 0.01  # in meters
radius = diameter / 2  # Radius is half the diameter

# Volume of a cylinder V = πr^2h
volume = math.pi * (radius ** 2) * length
# volume = 3.93x10^-6

# Volume of the bag
volume_of_bag = 2  # in cubic meters (2m x 1m x 1m)

# Number of Cheetos that fit in the bag
number_of_cheetos = volume_of_bag / volume
# number_of_cheetos = 509,296

# Number of Cheetos per large bag
cheetos_per_bag = 200

# Number of bags needed
number_of_bags = number_of_cheetos / cheetos_per_bag
# number_of_bags = 2,546

The Cheetos in the bags cost that much, not the bags themselves.

How did you infer the plastic bags themselves cost the entire price?